Hy.Truecaller is the free application which keeps track of your dailly call records. it also allows to make the online account and further you can check your all call details which is very important for day to day life . one of the best feature of true caller that I like very much is you can search for any record and check the operator as well as the name of the person who is using this number. I am very happy with the service provided by an truecaller.thanks.